build(deps): bump regex from 1.4.5 to 1.4.6
Bumps [regex](https://github.com/rust-lang/regex) from 1.4.5 to 1.4.6.
- [Release notes](https://github.com/rust-lang/regex/releases)
- [Changelog](https://github.com/rust-lang/regex/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/regex/compare/1.4.5...1.4.6)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>